Fanning-mill



(No Modei.)

G. & J. W. GRAY.

. FANNING MILL. No. 347,706. v Patented Aug. 17, 1886.

%@4 4 aw. I i

N. mus. PhnloLilhngnphnr, wmmmm, ac

UNITED STATES PATENT OFFICE.

GEORGE GRAY AND JOHN W. GRAY, OF SAUK CENTRE, MINNESOTA.

FANNlNG-lVllLL.

SPECIFICATION forming part of Letters Patent No. 347,706, dated August17, 1886.

Application filed December 16, 1885. Serial No. 185,837. (No model.)

' JOHN W. GRAY, citizens of the United States,

residing at Sauk Centre, in the county of Stearns and State ofMinnesota, have invent-' ed certain new and useful Improvements inFanning Mills; and we do declare the following to be a full, clear, andexact description of the invention, such as will enable .others skilledin the art to which it appertains to make and use the same, referencebeing hadto the accompanying drawings, and to the letters and figures ofreference marked thereon, which form apartof this specification.

This invention relates to fanning-mills; and it consists in the novelconstruction and combination of parts herein shown, and moreparticularly hereinafter described and claimed.

v In the accompanying drawings, Figure l is a side view' of our improvedmill with the nearer side removed, and partly in section, to moreclearly show theinternal construction. Fig. 2 is a sectional detail onthe line 00 a: of Fig. 1, parts being broken away to show the relativearrangement of other parts.

The frame consists of corner-posts A, crossbars B, and the sides O.Between the rear corner-posts a fan-shaft, D, is journaled, carrying asuitable fan, E, incased within a suitable shell, F. A shoe, G carryinga gang of sieves, H, resting on stops 9, is pivotally hung by straps Ito the sides of the frame. In the operation of the machine, this shoe,with its gang of sieves, receives a vibratory movement from thefan-shaft by a rod, J, connecting the shoe with an eccentric, j, on thefan-shaft. To the lower cross-bars is journaled a shaft,K,in aslightly-inclined position,

in bearings k.

Spiders L L, secured to the front and rear of the outer cylinder,support the same on the shaft K. The spider L is keyed to the front ofthe shaft K and communicates motion thereto. Spider L revolves freely onthe sleeve N, mounted on the shaft K. Arms a support the inner cylinder,0, on the sleeve N, leaving an annular space, 0, between the twocylinders. The rear end of the shaft is projected beyond the sleeve N,and is provided with a pinion, Z, while the end of the sleeve has acorresponding pinion, Z. Between these two pinions, and in meshtherewith, works a pinion, L on the end of a shaft, P, journaled atright angles to the shaft K in bearings p. A band, Q, extending from thefan shaft driving mechanism, passes around a pulley, q, on the shaft P,and communicates motion thereto. The cylinders M and O are open at bothends, and are inclined to correspond with the inclination of the shaftK.

A hopper, R,located over the gang of sieves, supplies grain theretothrough a slide-regulated opening in its bottom. The grain, as it leavesthe gang of sieves, drops onto a chute, S, which extends within theinner cylinder.

In practice, motion being imparted to the shaft P, the cylinders arerevolved in opposite directions, by reason of the connectionshereinbefore referred to. The grain delivered to the inner cylinderpassesthrough its meshes onto the outer cylinder, and as the innercylinder carries the grain in one direction and the outer cylindercarries it in-an opposite direction the grain is always deposited fromthe inner cylinder onto a clear portion of the outer cylinder, and isthereby more thoroughly cleaned, and the dust and foreign matterentirely removed. The grain as it leaves the outer cylinder drops onto achute, T, and is conveyed to any suitable vessel or other convenientpoint.

Having thus described our invention, what "we claim, and desireto secureby Letters Patent, is

In a fanning -mill, the combination of the shaft K, cylinder M, spidersL L, secured to opposite ends thereof, the latter, L, being keyed to thefront of the shaft, and the former, L, loosely mounted thereon andhaving anenlarged opening at its center, a sleeve, N, journaled on theshaft, and having its end projected through the spider L, within whichit is free to rotate, cylinder 0, located within cylinder M, arms 12,supporting it on the sleeve, pinions Z and Z, keyed to the ends of theshaft and sleeve, respectively, pinion Z located intermediate'of thepinions Z and Z, and meshing therewith, and shaft P, supporting pinion Zand provided with means for rotating it, substantially as described, andfor the purposes specified.

In testimony whereof we affix our signatures in presence of twowitnesses.

GEORGE GRAY. JOHN W. GRAY.

Witnesses:

A. BARTO, L. R. BARTO.

